Change in the law for paedophile hunters

Paedophile hunters are doing a great job for the community, bringing these evil people to justice, Yet the law enforcement are trying to stop hunter groups bringing these people to justice in the way that these groups work.. Why?.... These teams have had hundreds of convictions, yet higher authorities are against these teams/groups from doing what the police can't do because of lack of resources. It has been put that the police will try to work with groups/teams but still nothing has happened. How long is it going to take for the Government to realize that hunter groups are making an impact.....